Idea for a new mode

I was writing this as a comment to someone elsewhere but decided it'd be better to fit it here.

Its an idea for a game mode where there is 5 players as per normal but a 6th person is chosen to the base. As the base, this is just a few of the ideas i thought that they could be given.

1. Choosing when to send cannons, which lane to throw them in (1 in each lane or 3 to 1 lane)
2. Send X waves of strengthened minions (casters or melee) to all lanes at once or to a single wave
3. Buffing towers for X seconds
4. Sending a suicide minion down a lane that when it reaches the furthest ally tower, repairs the tower for it's life (shown on map to enemy team to give counter play)
5. Sending a weakened siege minion, about halfish hp, down a lane. to use, X amount of time needs to have passed and it be a heavy cost to use.
6. Increase team passive income (does not increase base income)
7. Sending a minion who does no damage and has 1 health but when it dies by an ally the ally gains a bush charge which they can then plant at any location within ward distance for 2-5 minutes. (basically Ivern W) Drops nothing when killed by an enemy, gives caster gold to killer.
8. Gold would be earned per wave, successful epic monster kills, and enemy towers and inhibitors going down.

Any comments for any specific trait, please just use the associated number.

This idea was made in maybe 20ish mins.